Otex express ear drops contains urea hydrogen peroxide and glycerol to break hardened ear wax into pieces and soften it so the wax can fall more easily from the ear otex contains urea hydrogen peroxide which reacts with moisture in the ear wax to release oxygen the bubbles of oxygen help to break up the wax while the remaining urea and glycerol soften any hardened wax so it can be shed naturally from the ear dual action ear wax treatment softens any hard build up of earwax breaks the ear